240281057 has 2 divisors, whose sum is σ = 240281058. Its totient is φ = 240281056.

The previous prime is 240281051. The next prime is 240281059. The reversal of 240281057 is 750182042.

240281057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 226472401 + 13808656 = 15049^2 + 3716^2 .

It is a cyclic number.

It is not a de Polignac number, because 240281057 - 2⁶ = 240280993 is a prime.

Together with 240281059, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (240281051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 120140528 + 120140529.

It is an arithmetic number, because the mean of its divisors is an integer number (120140529).

Almost surely, 2^240281057 is an apocalyptic number.

It is an amenable number.

240281057 is a deficient number, since it is larger than the sum of its proper divisors (1).

240281057 is an equidigital number, since it uses as much as digits as its factorization.

240281057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 240281057 is about 15501.0018063350. The cubic root of 240281057 is about 621.6889925146.

The spelling of 240281057 in words is "two hundred forty million, two hundred eighty-one thousand, fifty-seven".